Jack H6

Digitalized Top Feed Lockstitch


This machine is categorized as a  Top & Bottom Feeding Computerized Lockstitch Machine for Heavy Duty with Stepping type.
1-needle automatic lockstitch machine designed for sewing thicker materials (e.g. leather, upholstery materials), equipped with an energy-saving motor built directly into the machine head (Direct Drive system). This solution guarantees quiet operation and low electricity consumption.

Automatic functions: 

  • thread trimmer
  • needle positioning
  • auto bartacking option
  • auto presser foot lifter

Double transport (bottom teeth and upper – rolling foot) ensures perfect movement of the upper and lower layers of stapled materials. The machine has a readable operating panel built into the head and LED backlight at the needle bar (with adjustable light intensity).

Technical parameters: 

  • sewing speed: up to 2200 stitches / min
  • stitch length: up to 10 mm
  • presser foot lift: 7,5-16 mm
  • needle system: DPx17
Categories: ,

Large Space Under The Foot Lift

The space has been increased by 54% (from 4.2mm to 6.5mm). After the presser foot has been raised from the servo drive, the feed dog is lowered. You can place 8-12 layers of jeans while sewing without damaging or scratching them: the feed dog will automatically readjust during normal sewing.


Efficiency increased by 35%. Response increased by 14.3%: acceleration from 0 to 6000rpm in 120ms.


Response increased by 14.3%: deceleration from 6000 rpm to 0 in 180ms.

Digital Presser Foot Lifter

One button adjusts the presser foot lifter / feed dog height, without the need for tools or mechanical settings as driven by a controlled stepping motor conveniently from the digital display.

Recognition of Thickness

Intelligent recognition when sewing thicknesses with consequent automatic reduction of speed and strength increase, making the seam smoother.

Digital Auto L / M / H Selector

With one click you can choose between light / medium / Heavy Duty material or have the machine do it independently.

Noice Reduction

Thanks to the step motors, we were able to reduce noise by guaranteeing 75dB at 6000rpm during sewing, 70dB during cutting and also during the lifting of the presser foot.

Short Thread

Thanks to the automatic electric cutter controlled by the photocells, the cut is 5mm both in front and behind.